CVE-2025-10101

Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Mach-O file may allow Local Execution of Code or Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25090300. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.
Configurations

No configuration.

History

12 Jun 2026, 23:16

Type Values Removed Values Added
CWE CWE-122
CWE-787
CWE-125
CVSS v2 : unknown
v3 : 8.1
v2 : unknown
v3 : 7.8
Summary (en) Heap-based Buffer Overflow, Out-of-bounds Write vulnerability in Avast Antivirus on MacOS of a crafted Mach-O file may allow Local Execution of Code or Denial of Service of antivirus protection. This issue affects Antivirus: from 15.7 before 3.9.2025. (en) Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Mach-O file may allow Local Execution of Code or Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25090300. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.

01 Dec 2025, 16:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-12-01 16:15

Updated : 2026-06-17 08:27


NVD link : CVE-2025-10101

Mitre link : CVE-2025-10101

CVE.ORG link : CVE-2025-10101


JSON object : View

Products Affected

No product.

CWE
CWE-125

Out-of-bounds Read